From the Web above. Describes the data wrong. This sport is mostly breathing by preventing the wind so as not to clash with the wind in his face, or clogged sinuses.Because it will impede breathing. The skin can not absorb oxygen with the safeguard measure, and when playing this sport when it is high.There will be less oxygen in the atmosphere. We can breathe normally, but require a mask to protect the respiratory system of the body.
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